Zboară fără motor și au doar un milimetru. Micro dronele care ar putea revoluționa medicina

Engineers have developed tiny drones that fly using sound instead of traditional motors. These micro-drones utilize Helmholtz resonance, where sound waves cause air-filled chambers to resonate, generating thrust. Researchers have created these devices using advanced 3D printing techniques, allowing for precise control through sound frequency adjustments. The drones can be directed left, right, or forward by changing the sound tone. Additionally, smaller devices called 'microflyers' can generate lift using different propulsion methods. This innovative approach could lead to even smaller devices and has potential applications in various fields, including biomedicine. However, the technology is still in the early stages of development.